Knonaime

Don't know if these help - since the forend takes up most of the barrel length.

From Briley regarding manufacture of the CF magazine tube: We do not make the carbon fiber tubing ourselves but purchase it from a company called Rock West Composites and this is what they say of the carbon we have selected: "The fabric weave "money layer" makes these carbon fiber tubes ideal for aesthetic applications. But this composite tube has all the structural qualities of unidirectional tubing with an outer woven fabric ply. Additionally, the carbon fabric outer layer helps minimize fraying and splintering during cutting and/or drilling operations." We have used this carbon fiber extensively to manufacture magazine extension in a variety of lengths for a number of different auto shotguns. We use this carbon as it is also machinable as we do not glue the carbon to it's steel or aluminum adapters but rather thread it. We use the same shallow thread technology we developed on our thin wall chokes to thread the carbon. The carbon is then threaded into it's individual adapters used for either magazine extensions or in the case of the Benelli M4 for the magazine. We know that carbon is very strong and tough as we have also experimented making barrels for our sub gauge tube sets. The carbon will retain the pressure when used as a shotgun barrel but the resin used to bond it is eroded by the heat over a period of time making it unsuitable for the application. The carbon used on magazine extensions is subject to repeated muzzle blasts without any adverse effects as they generally extend beyond the muzzle of the barrel. To date we have purchased several thousand feet of carbon tubing and converted it into magazine extensions. We have yet to have a complaint about the carbon discoloring to gold??? Our sponsored 3 gun shooters have never mentioned this problem. Either way we are always open to hearing of any issues related to our products but at this time we are unaware of any issues related to discoloring. Thanks. Claudio Salassa 1230 Lumpkin Road Houston, Texas 7704

sorry - i re-read my posts - i meant your posts. i was watching a video at the same time i posted - it's hell getting old. Actually i had the same thought - i used a small bead of blue.

yes sand, primer, sand, primer, sand, etc. until it is nice and smooth. epoxy primer. (wet sanding, so the fibers aren't damaged and curled out and carefully - ask me how i know)

I have been reading this forum for years - finally decided to join. Thank you all to the wealth of information you have provided. Watched a lot of Stranger Danger videos on this site and others. I put the question regarding manufacturing process on the CF tube to Briley. It was mentioned above about cf production especially on automotive parts - especially an issue regarding engine parts and intakes; putting cf into BMW's is like putting them into a pizza oven, and how this would pertain to magazine tube. Link regarding manufacturing/producing composite tubing: https://www.rockwestcomposites.com/blog/4-methods-for-producing-composite-tub I bought the Briley CF tube a few months ago and have run about 200rds through the shotgun. So far no discoloration or hangups. I ran snap caps through for awhile before actually using live rounds. I had to set my heatgun to 1100f to get the threadlocker to break. when i use red a single a single bead does it.